The 2016 California Festival of Speed at the AAA Auto Club Speedway sponsored by Porsche Riverside Riverside. Track racing with appearances by the Porsche 918, 911 GT3 RS, Cayman GT4, 911 Turbo, 911 Turbo S, 991, Boxster and so many more! The sounds of the engines alone made your heart beat faster. Check out the best moments of the day, and like/comment/share to support!